Nanostructure engineering for high-performance thermoelectric polymer composites
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초록
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Thermoelectric (TE) generators are receiving increasing attention as promising candidates to address environmental issues related to fossil fuels, as they generate electricity from waste heat, which is the end product of all energy consumption cycles. Conducting polymers have emerged as notable organic TE materials due to their inherently low thermal conductivity, non-toxicity, and mechanical flexibility. However, doping conducting polymers requires molecular dopants, which occupy a considerable volume and significantly affect the micro-/macroscopic geometry of the conducting polymers. Various strategies have been introduced to manipulate dopant concentration, polymer-dopant interactions, and the energy structure. Such nanostructure engineering has resulted in improved charge transport behavior, thereby enhancing not only electrical conductivity but also the Seebeck coefficient, emphasizing the importance of understanding the structure-property relationship in organic TE materials.